WU Tingting, HE Xiping*, WANG Yanjun, LI Na, YANG Jiating
(School of Physics and Information Technology, Shaanxi Normal University, Shaanxi Key Laboratory of Ultrasonics, Xi′an 710119, Shaanxi, China)
Abstract:
In order to reduce the processing cost and reduce the stress at the transition of the stepped horn, a new multi-step ultrasonic horn is designed. The frequency equation and the formula of the amplification coefficient of the horn are derived. Based on finite element method, distribution of the stress and the displacement along the axis of the horn are investigated. The results show that comparing with traditional stepped horn, the amplification factor of the mult-stepped horn is slightly change, and the decrease of the peak of stress relative value is obvious. Compared with the stepped horn with conic and the circular arc transition section, the amplification factor and the peak of stress relative value are basically same.
KeyWords:
multi-step; amplification factor; stress relative value
